Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D454391 | Ventilation grill | — | 2002-03-12 |
| D453564 | Ventilation grill | — | 2002-02-12 |
| D438948 | Ventilation grill | — | 2001-03-13 |
| D437405 | Ventilation grill | — | 2001-02-06 |
| D392380 | Kitchen range hood | Walter L. Bohl, Jr. | 1998-03-17 |
| 5690093 | Ventilator controller with variably adjustable fan and light | Robert C. Voosen, Chris Hentschel | 1997-11-25 |